A field study was conducted to evaluate the effect of reimplanting, and of implanting technique, on the performance of yearling heifers. Daily gains of reimplanted, single implanted and non-implanted cattle averaged 3.00, ...

Lutalyse aborted 86.7% of heifers 40 to 100 days pregnant. Of four heifers
tested at 101 to 150 days pregnant, all aborted. Open heifers gained faster
(P<.05) than heifers that either were aborted or pregnant at slaughter. ...